Hub-bearing.



Patented Dee. I6, |902.

2 Sheets-Sheet I.

E CHBISTMAN HUB BEARING.

(Appl z nm July 29 1901 No. 7|6,I90.

(No Model.)

Patented Dec. I6, |902. E. CHRISTMAN.

HUB BEARING. (Application led July 29, 1901.)

2 Shets-Sheet 2.

(No Model.)

rllll "mf/*aes se s Tm: cams Truss co. pHoro-undo., vmswms'roa, D. c.

UNITED ESTATES.

PATENT OFFICE.

EDWARD CHRISTMAN, OF LOUISVILLE, KENTUCKY, ASSIGNOR TO BRENNAN & COMPANY, SOUTH WESTERN AGRICULTURAL WORKS, OF LOUISVILLE,

KENTUCKY.

HUB-BEARING.

SPECIFICATION forming part of Letters Patent No. l716,190, dated December 16, 1902- Application iiled July 29, 1901l Serial No. 70,106. (No modelJ To Lcir/Z13 whom it may concern:

Be it known that I, EDWARD CHRISTMAN, a citizen of the United States, and a resident of Louisville, in the county of Jeerson and State of Kentucky, have invented certain new and useful Improvements in Hub-Bearings, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of 1o the speciiication. i

My invention relates to improvements in hub-bearings, and is illustrated in its application to the journal-bearings in disk furrowopeners and wheels; but it is equally applicable to otherjournal-bearings,and is especially applicable Where itsV use brings it near the ground-as, for instance, in i many agricultural implements where there is Va likelihood of dirt, sand, or grit getting into the bearings.

zo The novel features of my improvement and its advantages will appear morefully asI proceed with the specication and will be particularly pointed out in the claims.

In the drawings like letters of reference in- 2 5 dicate like parts of the mechanism.

Figure l is a side elevation showing the concave side of a disk provided with my iniproved journal-bearing. Fig. 2 is a plan view of the same. Fig. 3 is a vertical section 3o of the hub-bearings of Fig. 1- on the line 3 3 looked at from the rear, the 'scale of Fig. 3 being twice that of Figs. l and 2. Fig. 4 is an elevation of one of the cones used in my improved bearing. Fig. 5 is a detail of that part 3 5 of the receiver of a drill to which my improved bearing is attached. Figs. 4 and 5 are on the same scale as Fig. 3. Fig. 6 is a vertical section of a modified form of the hub-bearings shown in Fig. 3. Fig. 7 is a vertical section 4o of one form of my improved bearings used in connection with agricultural implements and is merely another application of the same invention. i

As stated, I have illustrated my invention as applied to disk furrow-openers,` and will now proceedwith a description of" same as illustrated inthe first five figures of the drawings. x

r3Ais the usual receiver or support connected 5o to the drag-bar A' by means of the flange A".

B is the disk or furrow-opener, having its convex side toward the receiver, and C is the disk hub, secured to the disk by means of rivets or in any other manner. The disk hub C is provided with the conical seats C' C', 55 which are .preferably made at an angle of forty-five degrees to the axis of the cone. In these conical seats are mounted two cones D D. The cones D D have annular recesses D cast in their outside faces and a rib or ridge Dl crossing this recess at one point, the purpose of which will appear later. By making the conical seats C C of the same degree of angle to the cone-axisA the cones become interchangeable. 6 5

Near the center of the receiver is cast an annular boss a, provided with notches d a' d u', said boss being adapted to iit within the annular recess D in the outer face of the cone D and one of said notches a being adapted to 7o receive the rib or ridge D. The receiver and the cones D D are provided with holes E, through which pass abolt E for securing the parts together. The holes in the cones are square, and the bolt is square near its head, so as to prevent the one cone from turning.

To put the parts together, one of the cones D is placed against the receiver, so that the annular recess D' its over the annular boss a. on the receiver or support, and the rib or ridge D" ts in one of the notches d', and thereby locates the cone in its proper position with relation to receiver and disk and preventing the cone from rotating. The disk hub C is then slipped on this cone, and the other cone' is put in place, and the bolt E is passed through the cones and the receiver and secured in place by means of the nut E. An oil-hole F is cast in the receiver, through which the oil may pass to the bolt and thence to the cones.

The boss a is provided with the four notches a', so that in case the cone wearsso as to lose its alinement in that position the cone may be shifted ninety or one hundred and eighty degrees, so as to take up the wear. I prefer to provide one or more thin Washers J, which are mounted between the inner faces of the cones, whereby the bearing may be adjusted in putting same together, and in case the ICO y out of order, and in the bearing-surfaces should Wear the washer or washers may be removed, thereby permitting the cones to be brought closer together and the wear taken up. This may also be accomplished by inclines on the faces of the cones or in any other suitable manner. The inner faces of the cones are preferably provided with oil-channels G, through which the oil easily passes to the conical bearing-surfaces. The disk hub is made to project a little beyond the outer faces of the cones, so as to prevent the earth or dirt particles from falling upon the cones.

In Fig. 6 I have shown a modiiied construction of the cones, the one D3 having the circular stud or boss b, which enters a correspondingly-formed depression or recess in the female cone D4. It is apparent that by the use of this construction the transverse strain on the bolt E is partially taken up by the stud b. placed between the two cones, as indicated at d. It will also be noticed that I have shown in this figure one of the cones only provided with the annular recess D', as the mere purpose of this annular recess is to take over the annular boss on the receiver of a grain-drill, as described heretofore.

The cones and their seats are made of chilled metal, which presents a hard wearing-surface calculated to withstand the action of any gritty substance that may temporarily nd its way between the wearing-surfaces of the bearing by being introduced with the lubricant through the oilchannel. The Wearingsurfaces being at an angle to the axis, I have foundin practice that in their rotation the tendency is to work the grit out toward the outer periphery of the cones and to discharge it therefrom, and any foreign substance is also prevented from working its way in from the outside. It has been the practice heretofore to construct bearings with so-called dust-proof appliances in the way of annular rings, felt washers, dac.; but such devices were ususlly composed of many parts, were expensive to manufacture, and easily became such constructions when dirt or gritty matteil is once introduced into them with the lubricant or otherwise it cannot' escape and remains there to the great detriment of the working parts, necessitating frequent renewals, and thus increasing the expense and annoyance.

The construction of my journal-bearing as above described is especially valuable in that it will permit of the very narrow attachment of the disk and the hub so as to give good clearance between the disks when there are two or more disks used on the same machine. This is a very desirable feature when the disks are brought close together, as is sometimes done.

In Fig. 7 I have shown the cones provided with trunnions c and adapted for use especially in connection with pressure-wheels for agricultural implements. In this ligure C is If desired, athin washer may be' l the hub or bearing, and D6 and D5 the cones,

provided, respectively, with a recess and stud, as in Fig. 6. The portions e are the supports or frame of the device, to which the wheel is secured by means of the bolt E.

By the simplicity of my arrangement, the bearing being practically of two parts, the hub and the cones, (the cones may be alike and interchangeable,) a great saving is obtained in the cost of manufacture. Where chilled bearings are necessary, the bearings are generally long, as is the case with drills made on the ordinary plan. The chills are very expensive to make and maintain, and it is also hard to get a good fit between the disk and the receiver' and for gritty matter to work its way out on account of the long bearing. In my device by the use ofshort cones of relatively large diameter and of wide angle I am enabled to get a large bearing surface, While at the same time using a short hub. Thus I secure a fiat narrow bearing having the rigidity and strength necessary to stand the severe strain and at the same time get a good `Working fit between the disk and its connection.

I have described one form only of seating the inner cone on the receiver-boss a. It is obvious that other methods may be employed to accomplish this object, and I therefore do not wish to limit myself to the annular recess D', rib D", and boss a, with notches d.

I have described my improved bearing as more especially applicableto disk furrowopeners; but it is perfectly apparent that this part of my invention may be readily applied to any bearing which is intended to work in or near the ground or in proximity to dirt or `grit.

I-Iaving thus described my invention, what I desire to claim as new, and to cover by Letters Patent, is-

1. In a journal-bearing, a hub having conical seats at both ends, annular plates of large diameter relative to their thickness Withconical edges having bearing in said seats, and with their inner faces adjacent, a support rigidly secured to one of said plates at its outer face and means for clamping said plates in place, substantially as and for the purpose described.

2. In a journal-bearing, icall seats at both ends, cones adapted to fit within said conical seats, said cones being provided on their outer faces with an annular recess, which is interrupted at one point by a ridge, a support for said cones, provided with a boss iittingwithin said annular recess and having a notch which receives saidfridge, and a clamping-bolt, substantially as and for the purpose described.

3. In a journal-bearing, a hub having couical seats at both ends,annular plates of a diameter relatively large compared with their thickness, with conical edges having bearing in said seats one or more washers between said plates, a support for said plates rigidly a hub having con` IOO IIO

secured to their outer faces and means for clamping them in place, substantially as and for the purpose described.

4. In a journal-bearing, a hub having conical seats at both ends,.cones adapted to fit within said conical seats, the adjacent faces of said cones having respectively a stud and a recess adapted to register with each other,

and means whereby said cones are clamped together, substantially as and for the purpose j described.

5. In a journal-bearing, a hub having conical seats at both ends, cones adapted to it within said seats, said cones being provided in their outer faces with an annular recess which is interrupted at one point by a rib,

`one or more washers between said cones, a

support for said cones provided with a boss fitting within said annular recess and having anotch to receive said rib, and a clampingbolt, substantiallyas and for the purpose described.

6. In a journal-bearing, a hub having conl ical seats at both ends, cones adapted to iit within said conical seats, one of said cones lhaving an annular stud adapted to fit within a corresponding annular recess in the adjacent cone, one or more washers between said within said seats, and being provided with an annular recess on their outer faces which is` interrupted by a rib, and on their inner faces with olways, one or more washers between said cones, a support for said cones provided with a boss fittingwithin said annular recess and having one or more notchesY in said boss adapted to receive said rib, said support havi ing an oilway, and a clamping-bolt, substantially as and for the purpose described.

8. In aijournal-bearing, a hub having conical seats at both ends, cones adapted to t `within said conical seats, the adjacent faces of said cones having respectively a stud and a recess adapted to register with each other,

and means for supporting and clamping the cones together within the bearings, substantially in the manner and for the purpose de- J scribed.

9. A hub provided with conical seats at `both ends, cones adapted to t Within said seats, said cones having oilWays on their inner faces, and one of said cones having a re- 1 cess in its outer face which is interrupted at one point by a rib, one or more washers between said c0nes,'a support forA said cones,

provided with a boss fitting within said anhub projecting beyond the outer faces of said cones, and a support for holding and clamping said cones within the bearings, substantially as and for the purpose described.

l1. In a j ournal-bearin g, a hub having conical seats at both ends, cones adapted to fit within said seats in such a way as to permit the hub to project beyond their outer faces, one of said cones having on its outer face an annular recess which is interrupted at one point by a rib, a support for said cone provided with a boss having one or more notches, said boss and notches respectively tting within said recess and receiving said rib, and a clamping-bolt, substantially as and for the purpose described.

12. In a journal-bearing, a short hub having angular bearing-surfaces, annular plates of diameter relatively large as compared with their thickness, with angular edges corresponding to and fitting within said bearingsurfaces and with inner faces adjacent, a support rigidly connected to one of said plates at its outer face, and means for securing said plates within the hub, substantially as and for the purpose described.

13. In a journal-bearing, a short hulb having angular .bearing-surfaces of wide angle, annular bearingplates of relatively large diameter as compared with their thickness,

`provided with edges at an angle coinciding with the bearing-surfaces of the hub,and with their inner faces adjacent, a support rigidly connected to one of said plates at its cuter face, and means for securing said plates within the hub and clamping them together,

`substantially as and for the purpose described.

14. `In a journal-bearing, a hub having angular'bearing-surfaces of wide angle, cones provided with annular recesses on their outer or larger faces and having bearing-surfaces coinciding with and adapted to t within said hub, a support provided with a boss arranged to enter the annular recess on the cone, and means for securing said cones and support in their relative positions,substantially as shown and for the purpose described.

15. In a journal-bearing, a hub having conical seats at both ends, cones having bearingsurfaces coinciding with and adapted to t within said seats, and having an annular recess in` their outer faces which is interrupted by a rib, and also having radially-extending channels on their inner faces to permit of the distribution of the centrally-introduced lubricant, a support provided with a boss having a notch or notches adapted to lit Within said annular recess and to receive said rib, and means for clamping and holding said parts in their operative positions, substantially as and for the purpose described.

EDWARD CHRISTMAN.

Witnesses:

A.`C. STARK, D A. MooN.

IOO

IIO 

